Class B7, Robinson 4-cylinder mixed traffics with 5'7" wheels, built 1921-24. All of the class were scrapped between 1948 and 1950. Two carried a 61300 number, and in 1949 the last survivors, Nos. 1365/7, 1375/7, 1381/2/6/7/8, 1391/2/6 were allocated new numbers 61702-61713 to make way for the new B1 class 4-6-0's, then under construction, and some of them actually carried these numbers for a short time before being scrapped.